ASX/Media Release

12 August 2010

Wolf 1 Gas Appraisal Well, Northern Perth Basin, Western Australia

Wolf 1

Progress and Status:

Origin Energy, on behalf of the L11 Joint Venture, advises that Wolf 1 gas appraisal well spudded on 17 July using the Weatherford drilling rig 826. This well is being drilled to appraise the extent of the gas accumulation discovered by the Redback South 1 well, drilled in 2009.

At 06.00 hours Western Standard Time the well was drilling ahead at 3,398 mMDRT#.

Drilling progress for the week was 693 metres.

Well type and location:

Onshore gas appraisal well, Perth Basin, Western Australia (L11 / EP 320).

Wolf 1 is being drilled as a directional well to intersect the target Wagina reservoir at a subsurface location 2.5 kms SSE of the Redback South 1 Wagina intersection and at a prognosed vertical depth of 3,876 metres sub-sea.

Surface location
Latitude: 29° 29’ 01.685” S
Longitude: 115° 09’ 45.465” E
 
Target location
Latitude: 29° 29’ 02.701” S
Longitude: 115° 10’ 06.606” E

Participating Interests

Origin Energy Developments Pty Limited* 67.00%
AWE Limited 33.00%


* A wholly owned subsidiary of Origin Energy Limited
# Measured Depth below the Rotary Table

For further information contact:

Investors
Angus Guthrie
Group Manager, Investor Relations, Origin Energy
Phone: +61 2 8345 5558
Mobile: +61 417 864 255

Media
Lina Melero
General Manager, Corporate Communication, Origin Energy
Phone: +61 2 8345 5217
Mobile: +61 427 017 798


About Origin Energy
Origin Energy is Australasia's leading integrated energy company focused on gas and oil exploration and production, power generation and energy retailing.

Listed in the ASX top 20 the company has approximately 4,000 employees, is a leading producer of gas in eastern Australia, is the largest owner and developer of gas-fired electricity generation in Australia and is a leading wholesaler and retailer of energy. The company services more than 3.5 million electricity, natural gas and LPG customers across Australia, New Zealand and the Pacific.

Origin's strategic positioning and portfolio of assets provide flexibility, stability and significant opportunities for growth in the ever changing energy industry. Through Australia Pacific LNG, its 50:50 incorporated joint venture with ConocoPhillips, Origin is developing Australia's largest CSG to LNG project based on Australia's largest CSG reserves base.

In New Zealand, Origin is the major shareholder in Contact Energy, the country's leading integrated energy company, operating geothermal, thermal and hydro generation facilities and servicing electricity, gas and LPG customers across both the North and South islands. Origin also operates several oil and gas projects in New Zealand and is one of the largest holders of petroleum exploration acreage in the country.

Origin has a strong focus on ensuring the sustainability of its operations, is the largest green energy retailer in Australia and has significant investments in renewable energy technologies.

For more information go to originenergy.com.au

 
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